"Then I saw Al Franken," Dupuy writes of the party. "I only bug celebrities for pictures when it’ll make my foster mom happy. She loves Franken, so I asked to get a picture with him. We posed for the shot. He immediately put his hand on my waist, grabbing a handful of flesh. I froze. Then he squeezed. At least twice."

Dupuy added that the alleged incident happened "quick; he knew exactly what he was doing."

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"It shrunk me," she added. "It’s like I was no longer a person, only ornamental. It said, 'You don’t matter—and I do.' He wanted to cop a feel and he demonstrated he didn’t need my permission."

Democratic senators came out in droves Wednesday in calling for Franken to resign after another accuser told Politico he tried to forcibly kiss her in 2006. Franken intends to hold a press conference to discuss his future on Thursday.

"While Senator Franken is entitled to have the Ethics Committee conclude its review, I believe it would be better for our country if he sent a clear message that any kind of mistreatment of women in our society isn’t acceptable by stepping aside to let someone else serve," Gillibrand said Wednesday in a Facebook post shortly after the Politico report.